US5140872A - Steel rule die and method - Google Patents
Steel rule die and method Download PDFInfo
- Publication number
- US5140872A US5140872A US07/201,322 US20132288A US5140872A US 5140872 A US5140872 A US 5140872A US 20132288 A US20132288 A US 20132288A US 5140872 A US5140872 A US 5140872A
- Authority
- US
- United States
- Prior art keywords
- plate
- cutting
- steel rule
- laser beam
- scoring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
- B26F2001/4463—Methods and devices for rule setting, fixation, preparing cutting dies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T83/00—Cutting
- Y10T83/04—Processes
- Y10T83/0405—With preparatory or simultaneous ancillary treatment of work
- Y10T83/041—By heating or cooling
- Y10T83/0414—At localized area [e.g., line of separation]
Definitions
- Steel rule dies for cutting and scoring as well as embossing sheets of cardboard and flexible materials have been fabricated from wood, laminated wood, resinated and impregnated woods, and metal "furniture" in which the steel rule cutting knives and scoring rules have been fitted into slots cut into the die body of the wood or metal and held in position by various means including the introduction of plastic materials such as epoxy resins into slots or cavernous openings in the die base to anchor securely the cutting rules and scoring rules from displacement.
- the reusable counterplates for cutting and scoring boxhoard or paper board to form carton blanks must be accurately constructed for reuse on hundreds of thousands or millions of impressions and cuttings necessitating precision fabrication and highly durable materials for retaining the cutting and scoring plates or rules in position in their slots within the base or supporting die member.
- the female counter plate for receiving the cutting and scoring rules must be accurately fabricated to receive the cutting and scoring rules to avoid misalignment and resulting inferior cutting and scoring of the final product.
- a further objective of this invention is to provide a steel rule die set for cutting and scoring material which has a metal face plate from which steel cutting and scoring rules are imbedded and project from the metal face plate and are retained therein by precisely cut openings for retention without extraneous plastic materials enabling the steel cutting and scoring members to cooperate with a female metal counterplate in which laser cut complementary score line openings are provided to cooperatively receive the score members of the male die with the counter plate having secured thereto a back-up plate covering the score line openings.
- Yet another objective of this invention is to provide a female counterplate having a metal face with laser cut complementary score line openings that are precisely aligned with the steel rule scoring members.
- the present invention overcomes the problems of the prior art by providing a steel rule die set and method for cutting and scoring sheet material having accurate means for aligning male and female embossing members attached to the male die and in which cutting rules and scoring rules are inserted in the die through slots that are formed by laser precision cutting.
- laser beams has been proposed for forming the grooves in plywood as noted in U. S. Pat. 3,863,550, it has not been found to be acceptable in its utilization since the grooves formed are inaccurate and the steel rule is relatively loosely held within the groove necessitating suitable filler material such as an epoxy resin or other thermoplastic or thermosetting resin material that is capable of being cured into a semi-rigid structure may be utilized to support the steel rule cutting and scoring members.
- the laser beam cutting of the present invention for piercing the metal face plate and counter plate of the die set is very accurately controlled with the proper axial gas flow jet at preselected pressures and pulse rates to form precision slotted openings for receiving and retaining the steel cutting and scoring members in position and to cut the scoring slots in the female counter plate eliminating the necessity for utilization of any plastic or other supporting structure within the slot adjacent to the steel rule.
- the slots formed in the counter plate may be accurately controlled within the precision necessary for the highest quality cutting and scoring die but at a fraction of the time and cost.
- the male cutting and scoring die metal face plate is provided with a die base and backing member which may be made of Permaplex or any other suitable rigid material that will support the bases of the steel rule cutting and scoring members.
- FIG. 1 is an exploded perspective view with a section removed of a steel rule die assembly embodying the invention with the components in the male die in position and the counter plate components spaced apart;
- FIG. 2 is an enlarged exploded perspective view of a portion of the male die with only portions illustrated in juxtaposition before assembly;
- FIG. 3 is a partial transverse sectional view taken substantially along Line 3--3 of FIG. 2 with the counter plate in elevated spaced relation to the male die;
- FIG. 4 is a perspective view of a modified female counter plate similar to that shown in FIG. 1;
- FIG. 5 is a view similar to FIG. 3 with the modified counter plate of FIG. 4.
- the male die has a stainless steel metal face plate 12 preferably fabricated of 410 stainless steel which is hardened sufficiently to withstand substantial wear and abrasion.
- the face plate 12 has secured to its back a backing plate 13 which may be of a dense material of resinated board or Permaplex and is sufficiently dense and of high density to resist disintegration under repeated cycles of pressure loadings.
- a metal framework 14 provides a perimeter around the male die forming a side rail and is firmly secured to the bottom of plate 12 and the edge of the backing 13.
- a steel cutting rule section 15 is imbedded in the backing 13 and extends or protrudes vertically above the metal face plate 12 with the top edge 16 of the steel cutting rule 15 being sharpened to provide the requisite cutting edge for the material to be cut.
- a relatively short segment 17 of the rule 15 extends upwardly and is exposed above the face of plate 12.
- the steel scoring rule 18 is also provided with a short segment 19 that extends above the surface of plate 12 with the main portion extending downwardly through the plate 12 and into the backing 13 in a manner similar to the portion 14 of the cutting rule 15.
- the upper edge 20 of the scoring rule 18 has a suitable radius or curvature to form a scoring line in the sheet material to be scored to form a fold line.
- Die positioning and mating buttons 21 are securely mounted in the plate 12 to cooperatively receive the button locating openings 22 in the female counterplate 11.
- the particular contour lines formed by the steel cutting rules 15 essentially form the perimeter of the pattern of the particular carton or box to be cut.
- the steel scoring rules 18 within the perimeter of the cutting rules 15 will form the scoring for the fold lines of the carton formed by the sheet material.
- the metal face plate 12 as shown in FIG. 2 is provided with a series of elongated rule-receiving slots which pass through the steel metal face plate 12 with only sufficient clearance to receive securely therethrough the cutting and scoring rules 15 and 18 with a minimum of clearance.
- Similar elongated rule-receiving slots 24 are formed in the backing member 13 for retaining the lower sections of the cutting and scoring rules 15 and 18 in a manner as shown in FIG. 1.
- the individual sections of the cutting and scoring rules are provided with U-shaped recesses 25 at spaced intervals for optimum rule flexibility and bending while relieving high stresses which may be present in the rules.
- the back of the metal face plate 12 and the upper surface of the backing plate 13 are secured together by a suitable adhesive to prevent parting of these members.
- the female counter plate 11 is also preferably constructed of 410 stainless steel which has the requisite hardness for maximum life through repeated cycles of cutting and scoring.
- the counter plate 11 has a series of cooperating score line slots 26 therein which will cooperate with and receive therein the upper score edge 20 of the scoring rules 18 during each cycle of the press for each carton to be cut and scored.
- the female counter plate 11 has securely fastened to its reverse side a rigid backing plate 28 in which the positioning openings 29 are provided to coincide with the openings 22.
- the backing plate 28 is preferably fabricated of 410 stainless steel similar to the counter plate 11 and the backing plate is securely fastened by suitable adhesive to the back side 27 of counter plate 11.
- the smooth undersurface 30 of the backing plate will serve to cover the slotted score openings 26 in the counter plate 11 thereby serving as an anvil for the scoring rules 18 which force the sheet material into the slotted score lines 26 of the female counter plate.
- the male die 10 is positioned beneath the counter plate 11 or the positioning may be reversed with the counter plate 11 on the face of the press with the male die above for reciprocation.
- the cutting rule 15 is imbedded in the backing plate 13 and the metal face plate 12 and projects upwardly a short distance above the level of the scoring rule 18 which is also firmly imbedded in the base 13 and extends through the metal face plate 12.
- the upper edge 20 of the scoring rule 18 is directly in line with the slot 26 in the counter plate 11 so that the sheet material inserted between the male cutting and scoring plate and the female counter plate may be cut by the steel cutting rule 15 through the cutting edge 16 when forced against the smooth surface of the counter plate while the sheet material is scored by the rounded edge 20 of the scoring rule 18 by insertion of the rounded edge 20 into the opening 26 in the counter plate.
- the cutting and scoring rule-receiving elongated slots 23, 24 and 26 are precision cut by means of a laser beam under critically controlled conditions to cut specifically the stainless steel sheets.
- a CO 2 laser apparatus of the type manufactured and sold by Coherent, Inc. of Palo Alto, Calif., Model Nos. 150 and 325 have been utilized in which there is a 250-300 micro-second pulse width at a rate of 770-2000 pulses per second with a feed rate of 0.250-0.666 inches per second with an average peak power of 30-100 watts using an axial flow of jet gas with oxygen at 15-65 psi pressure.
- a 2.5 inch focal lens is employed at 10.6 micron wave length through a 0.020 to 0.040 orifice in a brass nozzle with the focal point at the surface of the metal.
- the surface area being cut is maintained parallel to the cutting nozzle with 0.001 to 0.003 slots being cut in the plate ultimately to form a slot ranging from 0.010 to 0.10 inches in width.
- the cutting of the slots 24 in the matrix packing plate or Permaplex packing does not require the aforementioned laser specifications and may be laser cut under conventional standards.
- the longitudinal slots 23 and 26 require no final finishing such as grinding or milling after having been laser beam cut to the precise tolerances necessary for a tight fit with the cutting and scoring rule 15 and 18.
- the laser beam cut slots 26 in the counter plate are also clear of any slag or ridge eliminating the necessity for any milling or grinding.
- the assembly of the cutting and scoring rules 15 and 18 may be inserted in a conventional manner after formation of the pattern.
- the laser beam cuts in the stainless steel sheets which average the thickness of from 0.062 to 0.125 inches.
- An improved female counterplate 31, as shown in FIG. 4, may be employed which has been laser beam scribed to eliminate the necessity for a rigid backing plate 28 shown in FIGS. 1 and 3.
- the female counterplate 30 is constructed of high carbon tool steel in which the laser scribed longitudinal slots 32 are 25 percent to 50 percent of the plate thickness.
- a high carbon tool steel plate having a thickness of 0.062 inches and has been scribed to a depth of 0.014 inches to 0.031 inches.
- a Laser Coherent Model No. 325CO 2 industrial laser has been employed in which the laser frequency is 255 pulses per second with a pulse length of one (1) millisecond at 90 to 120 watts peak average power.
- An axial flow jet stream of oxygen is utilized at a pressure of 15 pounds per square inch and at a 2.5 inch focal lens at 10.6 micron wave length.
Abstract
Description
Claims (9)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/201,322 US5140872A (en) | 1981-09-08 | 1988-05-25 | Steel rule die and method |
US07/879,944 US5211084A (en) | 1981-09-08 | 1992-05-08 | Method of making a steel rule die |
US08/060,610 US5333519A (en) | 1981-09-08 | 1993-05-11 | Steel rule die and method |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US29967281A | 1981-09-08 | 1981-09-08 | |
US56794284A | 1984-01-04 | 1984-01-04 | |
US70165985A | 1985-02-15 | 1985-02-15 | |
US07/201,322 US5140872A (en) | 1981-09-08 | 1988-05-25 | Steel rule die and method |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US70165985A Continuation | 1981-09-08 | 1985-02-15 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/879,944 Continuation US5211084A (en) | 1981-09-08 | 1992-05-08 | Method of making a steel rule die |
Publications (1)
Publication Number | Publication Date |
---|---|
US5140872A true US5140872A (en) | 1992-08-25 |
Family
ID=27498424
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/201,322 Expired - Fee Related US5140872A (en) | 1981-09-08 | 1988-05-25 | Steel rule die and method |
US08/060,610 Expired - Fee Related US5333519A (en) | 1981-09-08 | 1993-05-11 | Steel rule die and method |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/060,610 Expired - Fee Related US5333519A (en) | 1981-09-08 | 1993-05-11 | Steel rule die and method |
Country Status (1)
Country | Link |
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US (2) | US5140872A (en) |
Cited By (40)
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US5211084A (en) * | 1981-09-08 | 1993-05-18 | Ameritek, Inc. | Method of making a steel rule die |
US5298010A (en) * | 1991-05-30 | 1994-03-29 | Levine William A | Two-part die for producing sheet material incorporating smaller areas defined by elongated slits and means of attachment |
EP0595259A1 (en) * | 1992-10-27 | 1994-05-04 | Karl Marbach GmbH + Co. | Apparatus for removing cut-out parts |
US5333519A (en) * | 1981-09-08 | 1994-08-02 | Ameritek, Inc. | Steel rule die and method |
US5566594A (en) * | 1993-11-05 | 1996-10-22 | Michlin; Steven B. | Long life re-rulable steel rule die system |
US5943935A (en) * | 1997-03-03 | 1999-08-31 | Atlas Die, Inc. | Lightweight dimensionally stable steel rule die |
US5983765A (en) * | 1996-08-13 | 1999-11-16 | Sandford; Peter | Anvil jack |
US6085625A (en) * | 1997-07-28 | 2000-07-11 | Sandford; Peter E. | Steel rule die system |
WO2000054908A1 (en) * | 1999-03-17 | 2000-09-21 | Gerber Scientific Products, Inc. | Die boards and method of making |
US6203482B1 (en) | 1998-09-29 | 2001-03-20 | Peter Nmi Sandford | Cutting, scoring and perforating die set and method |
US6218642B1 (en) * | 1999-07-12 | 2001-04-17 | J. F. Helmold & Bro., Inc. | Laser hardened steel cutting rule |
US6626965B2 (en) * | 2001-06-29 | 2003-09-30 | Provo Craft & Novelty, Inc. | Apparatus for forming die cuts and method of manufacturing same |
US20030191021A1 (en) * | 2002-04-03 | 2003-10-09 | 3M Innovative Properties Company | Lamination apparatus and methods |
US20030188615A1 (en) * | 2002-04-03 | 2003-10-09 | 3M Innovative Properties Company | Angled product transfer conveyor |
US20040241525A1 (en) * | 2003-05-28 | 2004-12-02 | 3M Innovative Properties Company | Roll-good fuel cell fabrication processes, equipment, and articles produced from same |
US20040255741A1 (en) * | 2003-06-23 | 2004-12-23 | Deng Guo Rui | Metal die cutting apparatus and method of forming same |
US20050039851A1 (en) * | 2002-04-03 | 2005-02-24 | 3M Innovative Properties Company | Method and apparatus for peeling a thin film from a liner |
US20050132861A1 (en) * | 2003-12-22 | 2005-06-23 | Deng Guo R. | Apparatus for forming die cuts |
JP2005522011A (en) * | 2002-04-03 | 2005-07-21 | スリーエム イノベイティブ プロパティズ カンパニー | Apparatus and method for singulating a porous fuel cell layer using an adhesive tape pickhead |
US20060037455A1 (en) * | 2004-07-16 | 2006-02-23 | Yeqing Deng | Pattern cutter |
US20060042419A1 (en) * | 2004-07-16 | 2006-03-02 | Yeqing Deng | Pattern cutter, its processing methods and moulds |
US20060179995A1 (en) * | 2004-10-28 | 2006-08-17 | Faye Angevine | Image cutter for producing stereo relief image |
US20060219077A1 (en) * | 2005-01-20 | 2006-10-05 | Yeqing Deng | Crank roller paper cutting device |
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Legal Events
Date | Code | Title | Description |
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AS | Assignment |
Owner name: AMERITEK LASERCUT DIES, INC. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HOLIDAY STEEL RULE DIE CORPORATION;REEL/FRAME:005027/0569 Effective date: 19890126 |
|
AS | Assignment |
Owner name: AMERITEK LASERCUT DIES, INC. Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. SUBJECT TO CONDITIONS RECITED;ASSIGNOR:HOLIDAY STEEL RULE DIE CORPORATION;REEL/FRAME:005044/0031 Effective date: 19890126 |
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Owner name: FICUS, INC, NORTH CAROLINA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERITEK LASERCUT DIES, INC. A CORPORATION OF NORTH CAROLINA;REEL/FRAME:005695/0455 Effective date: 19910506 |
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